Rotary punch and die mechanism



Aug. 28, 1923. 1,466.001

v A. w. METZNER ET AL v ROTARY PUNCH AND DIE MECHANISM Fild June 1 1920 s Sheets-Sheet 1 Aug. 28,1923. 3 1,466,001

A. W. METZNER ET AL.

ROTARY PUNCH AND DIE MECHANISM Filed June 1, 1920 SSheets-Sheet 2 (xx-u Aug. 28, 1923. 1,466.00]

A. w. METZNER ET AL ROTARY PUNCH AND DIE MECHANISM Filed June 1, 1920 3 Sheets-Sheet 5 S M mm /LMWWMI 5 9. ATTOP/VfKS/ Patented Aug. 28, 1923.

UNITED STATES- PATENT OFFICE.

ALBERT W. METZNER AND JOHN Q. SHERMAN, OF DAYTON, OHIO; SAID METZNER ASSIGNOR T0 SAID SHERMAN.

ROTARY PUNCH AND DIE MECHANISM.

Application filed June 1,

To all whom it may concern:

Be it known that we, ALBERT W.. Mnrznnn and JOHN Q. SHERMAN, citizens of the United States, and residents of the city of Dayton, in the county of Montgomery and State of Ohio, have invented a certain new and useful Rotary Punch and Die Mechanism, of which the following is a full, clear, and exact description, reference being had to the drawingsforming part of this specification.

Our invention relates to punch and die mechanisms and has special relation to the punching of a series of'holes in webs of p' p i There has been great difliculty in the prior art in rapidly and accurately punching paper webs or strips, due in part to the failure to provide a properly" operating ror t'ary punch. As soon as any high rate of speed has been attempted in the past, our.

information and experience is that imperfect work has resulted withv failure of the punches and dies to make clean holes, and adherence of the confetti or punchings either to the paper or the dies.

It is the object of our invention to provide a mechanism of rotary mode of operation which positively clears the paperand itself as well of all punchings of confetti and operates at a high rate of speed, without any tendency to fail in accurate and clean work.

Among other things, W employ a plunger operating under spring .tension or otherwise, in the die units themselves, with or without other clearing devices or structures, same serving as a guide to insure accurate registry of punch and die and chiefly designed to cooperate with the punch in grasping. the paper firmly, thereby carrying the portion of the paper to be removed bodily into the die and subsequently ejecting it.

I 'We also provide for a piercing pin which is preferably cam and'spring controlled to positively pierce the confetti resulting from the punching operation, thereby positively preventing its adherence to the paper strips,

Ve accomplish our objects and advantages by thatcertain construction andarrangement-of parts to be hereinafter more specifically pointed out and claimed.

Tn the drawings, I

Figure 1 is a side elevation, more or less -ing bars;.,

192a. Serial No. 385,545.

diagrammatic, showing the driving-connections and interconnections for insuring per-' feet accuracy offeed;

Figure 2 is a side elevation of one of the die units showingits method of mounting on the driving shaft therefor, for quick adjustability; I

Figure 3 is a detail section taken through the device shown in Figure 2;

Figure 4 is a detail end elevation of one of the punchpins, showing the cut-away nature thereof; I Figure 5 is an end elevation showing a pair of ,punch and die drums, with their shafts, and the connection between them,

whereby both are driven at exactly the same speed without chance of dead centering;

Figure 6 is a detail section taken through a punch and die unit. at the point of punchmg, showing likewise the brush device for removing adherent confetti from the pap'er;v

Figure 7 is a detail elevation, partly in section, adjacent thepunch and die, showing the operated piercing pin feature of our Invention;

Figure 8 is a detail plan view showing the punch carrier in section and illustrating a I method of mounting the punch pin operat- Figure 9"is a'detail, sectional view, partly in elevation, showing a modification of the piercing p'in feature; and Figure 10 is a detail elevation ing pin shown in Figure 7.

No attempt has been made to show a comof the pierc- Since our punch is designed for use withany desired means of power-,either as a separate mechanism or as a part of a machine for printing, and numbering webs of paper. As a particular use for our machine, we refer to. the use thereof in preparing marginally penforatedpaper for manifolding ma hines or autogra'phic registers.

4 In such'machincs it is customary to printthe various duplicate strips in multiple and plctc machine with all driving connections,

The shaft?) has keyed thereon an eccentric stud l and crank 49, said crank and stud being set apart at an angle. The shaft 2 has like cranks 4 at each end, lying parallel with the cranks adjacent to them on the shaft 3. Links 5, 5, connect the cranks at each side of the machine to slide blocks 6 which are suitably mounted" in guide-ways 7.

From this construction, the driving of the shaft 3 willpositively drive the shaft 2 in perfect alignment, all dead centering being prevented by the a-nglingfrelation of the cranks with relation to each other, always, of course, keeping the cranks of each pair in parallel.

Forward of the machine, from-the unch and die shafts, we have shown the printing rollers 8, 8, having gears 8, which are driven by a gear 9, which also drives a gear 10' on the die shaft 3. The paper is stored on a roll 11, from which it passes to the printing rollers, and thence over idlers 12 which steady and support the paper and provide a tangential path therefor, between the punch and die units. The punch and die units are, as has been -noted, rotary, and in addition thereis no attempt at retaining the matching parts in parallelism, since due to the'nature of the punch and die elements they may he mounted radially and come into parallelism only at the instant of full penetration of th punch into the die. v 2

As shown in Figures 2 and 3, the drums,

' which form the rotary members of the die and punch units, are preferably made up'in two portions 13 and 14, one of which is provided with a key-way 15 for keying to the operating shaft. v

Sleeve portions 16 are formed on the halves of the drums which are flanged and suitably bolted together at 17, so as to be readily loosened andadjusted along the shafts on which they are mounted, and, in .addition, so as to be readily removable and replaceable from and on said shafts.

The punchunits 17 are set radially into the periphery of the drums 18 and in the desired spaced relation said spacing to correspond .with thatof the dies in the die drums 19. The punches have a hollow interior 20 and are also cut across the ends at right angles, so as to form four notches 21 in their ends (Figure 4)."

While this special form of punch has been found quite satisfactory in use by us, we do not at all limit the range of design of the ,tion. 'harily be made conical in shape to fit the debut not in contact with either.

I punch.

punches to that specific shape now described. We have in "fact obtained excellent results by the use of punches having plain or slightly concaved ends.

The dies are of special construction, and in the embodiments selected for illustration of the invention are in part made up to cooperate with the" special form of punch. Cylindrical pieces 22 form the dies proper, and are set into suitable orifices in the periphery of the drums 19.

Mounted to slide in the cylindrical die pieces are the plungers 23, which are flanged *at the inner end and actuated by coiled springs 24, bearing against said flanged ends, and held in place by screws 25 set into the die holes of the drums.

As shown the apices of the plungers or as to lie flush with-or slightly beyond the,

outer edge of the dies when in normal posi- The ends of the plungers will ordipressions in the punches and in the simplest form of our invention has points 26 formed at the apices of the punches, although ordinarily they will be independently operable.

It will be noted that the drums as arranged on the shafts, are spaced apart at the point of contact of the punches with the dies and that the paper is passed between the drums in a plane tangential to the drums, For some materials it might not be absolutely necessary for the material to pass freely between the two drums, but for paper, we have 'found this very necessary to avoid any chances of the drums themselves interfering with the motion of the paper.

As a punch and dieapproach each other, 3

the punch and plunger engage the paper on two sides and while maintaining this grasp the punch and plunge-r enter the die thereby punching out the desired shaped hole. In

entering the die the punch depresses the plunger within the die. leaving its spring to force it outwardly through the die as the punch leaves. The punching left in the'die is thus ejected by an element acting through the die itself, in an opposite direction to the The plun ers in thedies due to their 'tapered cuts and the similarly shaped sockets in the-punches will act to align the :punches anddles and as noted, to eject the confetti. However, the main reason for using this plunger is to grip the portion of paper, or other material to be punched out, firmly against the punch when. the punch comes in contact with the plunger, thus holding the portion to be punched out in an absolute parallel position and carrying it into the die regardlessof whether it is punched absolutely clean all the way round,

to hold the punches in place.

and by'the portion to be punched being'carried. into the die in this fashion it will be torn away from the paper web or other material at the point where it may not be punched clean. \Vithout the use of this plunger the slight shearing of the punch on one side would cause the paper or other material to be only partially punched from the main piece, and by it adhering to one portion it would curl down into the die. By being carried squarely .into the die, by grip ping between plunger and punch it will positively be torn out, regardless of any possible partial shearing of the punch leaving an open space or non-cutting space between the punch and the die.

As shown in Figure 7, the method of mounting the punches is slightly different from the form illustrated in the simpler form of the device, the punches being tightly fitted into bushings 31 driven into the mounting drumsand screws 32 employed This form of mounting permits of the changing of the punches without marring the drum or mounting device.

In the dies for the more elaborate form of structure the means for mounting the plunger and the plunger itself are the same as that shown in the firstsix figures and are similarly numbered, except for the fact that the plunger has an axial hole 33. therein and does not have the pin point at its apex, the pin point being provided by a separate mechanism actuated by cams.

In the preferred embodiment showing the independent pin point elements, there is bars 41.

mounted on the two faces of the lower drums or-die carrying drums an annular plate 34.

The small screws 35. which hold the plunger springs in place are perforated with an axial hole similarly to the plungers, and pins 36 are provided which extend up through the plungers, said pins having a small groove 36 around their tips. I

These pins are formed with shoulders 37 and thickened ends 38, there being springs 39"- mounted over the pins and acting between the shoulders and thescrews 35. The

thickened ends extend through and are guided in the annular plates 34.

There is one plain shaft orbar 39, and one .eccentric shaft or bar 40, mounted alongside of the die unit shaft which carry cross These cross bars are provided with journals 42 at one end to engage over the shaft39, and are'preferably forked as at 43 at the other end to engage the eccentric shaft 40. The bars straddle the die units closely adjacent the sides thereof, and are arched up as at 44 to clearthe mounting sleeves.

Mounted on the arched portions of the barsare cam plates 45 which liein the path of As may be observed the revolving of the eccentric As shown in the drawings, there is one of these straddling bars and cam devices for each side of each one of the die unitsand when each .die approaches the position of engagement with a punch. the pins will be thrust upward through the plungers and will impale the paper engaged between the punch and die, and hold it as the punch and die are disengaged from each other after which the pin will be drawn by its spring to a position with its point inside of its respective plunger. ()ther arrangements of dies. punches, straddling bars and cams may readily be devised in addition to the above. Due to the conformation of thefends of the pins they will puncture and grasp the confetti punched out of the paper," and their withdrawal will strip said confettiaway at the apex of the plungers in each instance.

A different form of impaling or piercing pin device is shown in Figure 9qwherein the pin 50.has itsshoulder 51 located in the space between the screw that retains the Tn order to clear the paper of any punchings that may adhere thereto. in spite ofall of. the above described agencies, we have v devised a brushing mechanism, which acts twice on each hole punched.

27, 28 and 29 being bentto the left in passing under the roll 27 and to the right in passing under the roll 29. The brush 30, operated by means of a twisted belt. from the shaft 3, and thus revolving in the opposite direction to the movement of the paper, acts on the paper as it is bent in passing the two rollers above noted, so that any projecting edge of a punching. will be caught by the brush and swept out of lodgment. in the paper. a

We believe the principles of construction and operation of our invention are made clear by the above concrete examples of its use and wish our claims that follow to be construed with the full application'of the doctrine of equivalents.

Having thus described our invention, what we claim asnew and desire to secure by Letters'Patent, is

1. A punching mechanism for the purpose described and having rotary members con'iprising in part punch elements and die elements, the same being adapted to contact 105 Thus the paper is drawn over idler rolls &

with each other to efi'ectuate a punching operation, and means in the die element engaging the punched out material and then ejecting it from the die elements, by a force exerted therethrough in the opposite direc-' with said punch, and to retain and eject said paper, said member adaptedito be'rnoved out of the way by the punch while retaining the punched out material between said member and the punch.

3. A punching mechanism for the purpose described and comprising rotary members, a punch carried by one rotary member and a die carried by another rotary member, said punch and die being adapted to come into operative relation during the rotationof said members, and a plunger slidable in the die, said plunger being adapted to enter the punch to cooperate with the punch to guide I it into the die.

4. A- punching mechanism for the purpose described and comprising rotary members,

a punch carried by the one rotary member, and a die carried by the otherrotary member, said punch and die being adapted to come into operative relation during the rotation of saidmembers, and a plunger slidable in the die and capable of extension beyond the mouth thereof, said plunger and punch having matching ends, whereby the plunger engages in the punch and guides the punch into the die.

5. The combination of a punch, a die, ro-

tary means for carrying said punch and die through radial paths toward and away from operative relation with each other so as to operate on a moving web of material, and means operating within the die for engagement with the punch during its punching operation to impale the material punched.

(S. The combination of a punch, a die, ro-

' tary means for carrying said punch and d e through radial paths toward and away-from operative relation with each other so as to operate on a moving Web of material, and means operating within the die for guiding the punch into engagement therewith, said means comprising a plunger dapted to contact with the punch and move together with the punch into the die, said punch and plunger having matching ends, and said plunger adapted to enage in the material punched.

7 lhe combination of a punch, a die, ro-

tary means for carrying said punch and die through radialv paths toward and away from operative relation with each other so as to operate on a moving web of material, and means operating within the die for guiding the punch into engagement therewith comprising a spring-pressed plunger within the die, said plunger lying-with its end normally beyond the die opening, and matching ends for the punch and plunger. l

8. The combination of a punch, a die, rotary means for carrying said punch and die through radial paths so as to act upon a,

moving web of material, and a spring-plunger within the die adapted to force out of the die the material left therein by the punch, said plunger having a point thereon adapted to impale the punched out material, said plunger movable inwardly ofthe die together with the punch.

9. The combination of punch and a radially moving die, said punc and dieadapted to come together for action on a moving web of material, a slidable plunger in the die, said plungerhaving a conical end, and aconical recess in the punch adapted to match with said conical end on the plunger, and means for projecting the plunger into contact with the punch prior to its entrance into the die.

10. The combination of a radially moving punch and a radially moving die, said punch and die adapted to come together for action on a moving web of.material,a slidable plunger in the-die, said lunger having a radially moving a conical end, and a conica recess in the punch adapted to match with saidconical end on the plunger, and means for projecting the plunger into contact with the punch prior to its entrance into the die, said plunger having an impaling point at its apex, and a central recess in the conical end of the punch adapted to receiversaid impaling point.

i 12. lln a punching machine, the combinationof a pair of rotary shafts, drums or the like on said shafts, positioned so that their peripheries do not contact with each other, means for constantly moving a web of paper between said drums, said means acting on the paper on both sides of-the drums, tangentially thereto and out of contact therewith, dles radially afixed in one drum, and

Lessons I punch carriers.

13. in a punching machine, the combination o-fa pair of rotary shafts, drums or the like on said shafts, positioned so that their peripheries do not contact'with each other, means for constantly moving a web of paper between said drums, tangentially thereto and out of contact therewith, said means acting on the paper on both sidesof the drums, dies radially afi'ixed in one drum, and punches radially aflixed in the other, said punches being adapted to enter the dies thereby punching said papenand means on the dmun carrying the dies to guide the punches'on the other drum into the said dies,

14. in a punching machine, the combination of a pair of rotary shafts. drums or the like on said shafts, positioned so that their peripheries .do not contact with each other, means for constantly moving a web ofpaper between said drums, tangentially thereto and out of contact therewith, said means acting on the paper on both sides of the drums, dies radially aflixed in one drum, and

I punches radially aiiixed in the other, said punches being adapted to enter the dies thereby punching said paper, and means on the drum carrying the dies to guide the punches on the other drum into the saiddies, comprising spring plungers mounted in said dies and adapted normally to project therefrom. i

15. In a punching machine, the combination with a moving punch and die, of means for moving a web of paper intermediate said punch and die, and clearing means for removing confetti from the punched portions of said paper, comprising in parts rotary brush, and means for causing said paper to traverse an angular path adjacent said brush, for the purpose described.

16. Ina punching machine, the combination with a moving punch and die, of means for moving a web of paper intermediate said punch and die, and clearing means for removing confetti from the punched portions of said paper, comprising in part a rotary brush. and a series of rollers located adjacent the brush and causing the paper to traverse a plurality of angular paths opposed to each other for action by the brus 17. In a punching machine, the combination of a pair of rotary shafts, drums or the like on said shafts, positioned so that their peripheries do not contact with each other,

means for constantly feeding a Web of paper tangentially between said drums but out of contact therewith, said means acting on the paper on both sides of the drums, means for driving one of said shafts, positive driving connection between the two shafts, and dies in one drum and punches in the other adapted to act on the web vof paper.

18. in a punching machine, the combination of a pair of rotary shafts, drums or the like on said shafts, positioned so that their peripheries do not contact with each other, means for constantly feeding a web I of paper tangentialiy between said drums but out of contact therewith, means for driving one ef-said shafts, positive driving connection between the two shafts, and dies in one drum and punches in the other adapted to act on the web of paper, said positivedriving connection comprising a double set of links, each set interconnected by a sliding element.

19. Iin a paper punching device, the combination with dies and punches adapted to come together, of oppose-drotary elements for carrying the punches and dies, means for driving both of the opposed rotary elements, and paper feeding means adaptedto feed paper between the opposed rotary elements at a speed uniform with the linear movement of the dies and punches, said means: acting on the paper on both sides of the drums, said rotary elements'being spaced apart so as to. be out of contact with the paper.

being relatively movable, of a plunger element moving through the die and adapted to engage paper between it and the punch,

and a. confetti impaling member moving through the plunger and adapted to: be

stripped by the plunger for the purpose described. v 1

22. In a machine for punching paper, the combination with a punch and adie, the same being relatively movable, of a plunger element moving through the die and adapted to engage paper between it and the punch and an impaling pin mounted to move axially through the plunger, and means for moving the point of said pin out through the end of the plunger at the time of relative punch and die movement, and Withdrawing said point within the plunger at the close of the punching movement.

23, In combination, a shaft, a revolving die-carrying element carried by said shaft, a series of dies set into said revolving element, spring-controlled pins mounted to,

the pins at a selected point during said reineenoi volving movement, said. spring control for the pins edspted to retain them in position for seicl com contact.

24. lln combination, e short, a revolving @ie-csrrying element cerrieol h-y seiol shaft, a series of ciies set into said revolving, element, spring-controlled pins mounteclto extencl through the olies for impoling confetti, an arm straddling the shaft, coin means for the arm eiiepteri to content With the pins at e seiected point during seiol revolving movement, see. spring control for the pins adoptecl to retain them. in position for soiol cam contact, rods or the likeifor carrying seici stredolling erm, one of seidi roots, least, having eccentric means "for engaging the said, arm, whereby the operation of ssicl ec centric means will adjust the position of the corn.

2, in e device of the cherocter oleserihmi, the comhinetion of e pair of shefts, e (iruin on each shaft, seicl clrums eclopteol to approa/ch each other at one point but not to come intoeontsct with each other, means for driving both of seiol shafts at e constsnt s oeecl, for feeding paper between said. drums ot a constant speed, said means acting;

on the paper on both sicles of the drums,

punches mounted on one drum, and dies set in the other, as and "for the purpose iescribe-(l.

226. In e device of the character clescrihfl,

on ennulsr element having a, hole therein,

o die set into the hole in said element, a, plunger in the die oncl having means for preventing its movement outwardly through the die, means closing up the hole ot the in- Werd end of the-(he, enfis spring between seiol lest-noted. means and; the plunger, for the purpose described, semi pinnger having an end formed With o taper end ribs there-v on, ssioi ohove noted parts being in coinhination with e punch adopted to move into e clie set therein, 3' plungerset in said die end edopteri' to move therein, a pin extending through the plunger, means for retaining theplunger in place in the clie, a spring adapted to force the plunger outwardly through the die, onci o spring mlepteii to force the pin invvenily through the plunger, said parts above being in combination with a punch adopted to move into the (lie ancl carry the plunger with it in said movement, and an element edeptecl to move the pin outvverdiy through the plunger during soicl punch movement and permitting" its retrs/ction through the piunger "following said movement.

JUHN Q. SHERMAN ALBERT W. METZNER. 

